Android Engineer (Android / Java / Kotlin)

Ampa is a pioneering neurotechnology startup developing brain stimulation technology to help eradicate depression. We are seeking an exceptional Software Engineer to own the development of our clinical Android tablet application, focusing on building responsive interfaces and ensuring integration with backend systems and hardware.

Responsibilities:

• Maintain and optimize the USB Serial communication layer (RS232/USB) between the Android tablet and proprietary TMS hardware
• Build and maintain high-performance Native Bridges (Java/C++ to TypeScript) to handle high-frequency telemetry (heartbeats, sensor data, and pulse logs)
• Manage complex application states using Redux Toolkit, ensuring that medical treatment data remains consistent even during hardware disconnections or app backgrounding
• Implement and debug custom binary protocols, including packet encoding/decoding, checksum validation, and serial command queuing
• Develop robust "Safety Interlock" logic to monitor hardware telemetry and trigger immediate software-level shutdowns in the event of hardware faults (overvoltage, overheating, etc.)
• Ensure the reliable collection and synchronization of clinical session data to AWS cloud backends via secure REST APIs
• Help establish Android coding standards, mentor junior engineers, and review code for quality and maintainability

Requirements:

• Expert-level React Native (0.75+) and TypeScript
• Proficiency in Java (Android Native) and TypeScript/JavaScript
• Advanced knowledge of Redux Toolkit (Slices, Async Thunks, and Middleware)
• Experience with USB/Serial communication, UART, or similar low-level protocols
• Comfort working with ArrayBuffers, Uint8Array, Hexadecimal conversions, and Bitwise operations
• Deep understanding of the React Native Bridge and/or JSI (JavaScript Interface)
• Experience with Axios, JWT-based authentication, and TLS security
• Experience with UVC Cameras, Gyroscopes, and Accelerometer integration on Android
• 5+ years of experience building production-grade Android applications in Java and Kotlin
• Strong UI/UX instincts — you care as much about how it looks and feels as how it works
• Hands-on experience shipping Android apps, with USB hardware and/or camera integration a strong plus